DISCARD

DISCARD

Discards the session state.

Synopsis

DISCARD { ALL | PLANS | TEMPORARY | TEMP }

Description

DISCARD releases internal resources associated with a database session. This command is useful for partially or fully
resetting the session's state. There are several subcommands to
release different types of resources; the DISCARD ALL
variant subsumes all the others, and also resets additional state.

Parameters

PLANS

Releases all cached query plans, forcing re-planning to occur
the next time the associated prepared statement is used.

SEQUENCES

Discards all cached sequence-related state, including any preallocated sequence values that have
not yet been returned by nextval(). (See CREATE
SEQUENCE for a description of preallocated sequence values.)

TEMPORARY/TEMP

Drops all temporary tables created in the current session.

ALL

Releases all temporary resources associated with the current session and resets the session to
its initial state. Currently, this has the same effect as executing the following
sequence of statements: